CN114986428B - Fastening mechanism for tower barrel bolt of wind turbine generator - Google Patents

Abstract

The invention discloses a fastening mechanism for a tower bolt of a wind turbine generator, which comprises a moving device, a driving spanner, a sleeve and a coaxial identification device; the moving device is used for adjusting the position of the driving spanner, the sleeve is used for sleeving the bolt, and the driving spanner is used for applying torque to the sleeve sleeved with the bolt and screwing the bolt; the coaxial identification device is arranged in the driving spanner, and the working end of the coaxial identification device is positioned at the bottom of the driving end of the driving spanner; the coaxial recognition device is electrically coupled to the moving device, and is used for driving the moving device and enabling the sleeve and the bolt to be coaxial. The fastening mechanism for the wind turbine tower barrel bolt can effectively solve the problems that an existing bolt detection and fastening device is difficult to align with the bolt and cannot screw the bolt to a target torque, and is simple and reasonable in structure, and light in overall structure, so that the defects in the prior art are overcome.

Description

Fastening mechanism for tower barrel bolt of wind turbine generator

Technical Field

The invention relates to the technical field of wind power generation, in particular to a fastening mechanism for a tower bolt of a wind turbine generator.

Background

The bolt connection has the characteristics of lower process requirement, simple structure and convenient assembly and disassembly, and has reliable structure and high strength, thereby being a mechanical part with extremely wide application. A wide variety of bolts are available on a wide variety of machines, equipment, vehicles, vessels, railways, bridges, buildings, structures, tools, instruments, meters, and supplies, etc.

For major engineering and heavy machinery equipment, the problem of detecting and preventing looseness of bolts has become a major scientific bottleneck worldwide. Particularly, for large and medium-sized wind generating sets, the number of bolts used is very large, and the bolts are usually positioned in a narrow and difficult-to-check position or in a dangerous position with high risk; in addition, the damage rate of the wind generating set is up to 40-50% because the wind generating set works in severe environments such as the wild, the insolation, the thunderstorm and the like for a long time, meanwhile, as the maintenance technology of the wind generating set cannot keep up with the development speed of wind power generation, once key parts (such as gears, bearings, blades and the like) of the wind generating set are failed, the device is damaged, the generator is stopped, and serious economic loss is caused. Therefore, in order to ensure reliable and stable operation of the wind power generation system, reduce the maintenance cost of the system, it is necessary to ensure that each bolt of the wind turbine tower is in the standard torque range.

The side wall bottom of the motor tower is generally inclined outwards, the inner side wall of the motor tower is provided with a fastening platform surrounding the tower, and fastening bolts uniformly surround the top of the fastening platform at intervals. In the past, domestic wind power generation enterprise detects fastening bolt one by one through artifical climbing, and personnel's climbing detects and mainly adopts simple spanner to detect, detects the big risk of degree of difficulty high, inefficiency. In addition, because of manual detection, the efficiency and the precision of the device are difficult to ensure, and the device is greatly influenced by objective factors of weather, is limited by the level of environment and engineering technicians, and is difficult to ensure the detection and fastening quality.

In order to solve the efficiency and the safety problem brought by manual detection, some wind power generation enterprises develop a device for realizing the rapid detection and the fastening of the tower bolts of the wind power generation set, but the existing bolt detection and the fastening device still have the problems that the bolts are difficult to align and cannot be screwed to target torque, and the existing bolt detection and the fastening device are complex in structure, the whole device is heavy, the detection precision and the operation efficiency of the device are greatly reduced, and the rapid detection and the maintenance requirements of wind power generation are difficult to be met.

Disclosure of Invention

The invention aims to provide a fastening mechanism for a tower bolt of a wind turbine generator, which can effectively solve the problems that the existing bolt detection and fastening device is difficult to align with a bolt and the bolt cannot be screwed to a target torque, and has the advantages of simple and reasonable structure and light overall structure so as to overcome the defects in the prior art.

To achieve the purpose, the invention adopts the following technical scheme:

A fastening mechanism for a tower bolt of a wind turbine generator comprises a moving device, a driving wrench, a sleeve and a coaxial identification device; the driving wrench is rotatably arranged at the moving end of the moving device, the sleeve is sleeved at the driving end of the driving wrench, the moving device is used for adjusting the position of the driving wrench, the sleeve is used for sleeving a bolt, and the driving wrench is used for applying torque to the sleeve sleeved with the bolt and screwing the bolt;

The coaxial identification device is arranged in the driving spanner, and the working end of the coaxial identification device is positioned at the bottom of the driving end of the driving spanner; the coaxial recognition device is electrically coupled to the moving device, and is used for driving the moving device and enabling the sleeve and the bolt to be coaxial.

Preferably, the driving wrench comprises a driver and a driving shaft, the driving shaft is rotatably installed at the moving end of the moving device, the driver is sleeved outside the driving shaft, and the driver is used for driving the driving shaft to rotate;

the coaxial recognition device is arranged in the driving shaft, and the working end of the coaxial recognition device is positioned at the bottom of the driving shaft.

Preferably, the moving device comprises a vertical moving assembly and a horizontal moving assembly, wherein the horizontal moving assembly is installed on the vertical moving assembly in a manner of being capable of moving up and down, and the driving wrench is installed on the horizontal moving assembly in a manner of being capable of moving horizontally.

Preferably, the sleeve is detachably sleeved at the driving end of the driving wrench, and the shape of the accommodating cavity of the sleeve is matched with the shape of the bolt;

The fastening mechanism further comprises an alignment resetting device, the alignment resetting device is arranged between the moving device and the driving wrench, the driving wrench is rotatably arranged at the bottom of the alignment resetting device, and the alignment resetting device is used for driving the driving wrench to rotate.

Preferably, the sleeve is sleeved on the lower part of the driving shaft in a vertically movable manner, the fastening mechanism further comprises a registration auxiliary device, the registration auxiliary device is sleeved on the outside of the driving shaft, and the registration auxiliary device is positioned between the driver and the sleeve.

Preferably, the alignment aid is an elastic member, and the fastening mechanism further includes a third in-place detector; the elastic piece is sleeved outside the driving shaft, one end of the elastic piece is connected with the driver, and the other end of the elastic piece is connected with the sleeve; the third in-place detector is located inside the elastic member and is disposed proximate to the driver, and the third in-place detector is electrically coupled to the vertical movement assembly.

Preferably, the alignment auxiliary device is an electromagnet, and the fastening mechanism further comprises a fourth in-place detector; the electromagnet is sleeved outside the driving shaft and is used for magnetically attracting the sleeve when being electrified; the fourth in-place detector is mounted to the lower end face of the sleeve, and the fourth in-place detector is electrically coupled to the vertical movement assembly.

Preferably, the driver is any one of an electric wrench driver and a hydraulic wrench driver.

Preferably, the driver is a hydraulic wrench driver, the fastening mechanism further comprises a hydraulic supply device, the hydraulic supply device is connected with the driver through a hydraulic oil pipe, and the hydraulic supply device is used for providing operation power for the driver.

Preferably, the hydraulic supply device includes a hydraulic pump and a hydraulic tank, the driver, the hydraulic pump, and the hydraulic tank are connected to each other through a hydraulic oil pipe, and the inside of the driver, the hydraulic pump, and the hydraulic tank are communicated with each other, the hydraulic pump being for generating pressure to deliver hydraulic oil of the hydraulic tank to the driver;

the hydraulic supply device further comprises a reversing valve, an overflow valve, a pressure detector, an electric control box and a universal wheel, wherein the reversing valve, the overflow valve and the pressure detector are arranged between the driver and the hydraulic pump, the reversing valve is used for switching the flow direction of hydraulic oil, the overflow valve is used for adjusting the output pressure of the hydraulic pump, and the pressure detector is used for detecting the oil pressure of the hydraulic oil;

The electric control box is electrically coupled to any one or a combination of a plurality of the moving device, the driver and the coaxial recognition device, and the universal wheel is installed at the bottom of the hydraulic oil tank.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

1. The existing bolt detection and fastening device generally integrates the walking and fastening functions, and the structural movement of the device is mainly used for realizing the walking of the device, and consideration of accurate sleeving of the bolt is omitted, so that the existing bolt detection and fastening device is difficult to align the bolt, and therefore the bolt cannot be screwed to the target torque. Therefore, the moving position is specially arranged in the fastening mechanism for the fan electric tower, the sleeve can be moved to the position right above the bolt through the moving device, then the bolt is sleeved downwards, accurate sleeving of the bolt is achieved, torque is applied to the sleeve sleeved with the bolt through the driving spanner, the bolt is screwed down, accordingly effective fastening of the bolt is achieved, the moving device, the driving spanner and the sleeve are mutually matched, the screwing rate of the bolt in the fan electric tower can be effectively improved, and the damage rate of the fan electric tower is reduced.

2. In particular, a coaxial recognition device for recognizing whether the sleeve and the bolt are coaxial is provided in the fastening mechanism. The coaxial recognition device is electrically connected to the moving device, the moving device is used for moving the sleeve, when the coaxial recognition device detects that the sleeve and the bolt are coaxial, the moving device stops the alignment movement of the sleeve in the horizontal direction after receiving the coaxial signal of the coaxial recognition device, then moves the sleeve 23 downwards and enables the sleeve to be sleeved into the bolt, and automatic and rapid alignment of the sleeve and the bolt by the moving device is convenient to achieve.

Drawings

FIG. 1 is a schematic structural view of a fastening mechanism for a tower bolt of a wind turbine generator.

FIG. 2 is a cross-sectional view of a fastening mechanism for a wind turbine tower bolt of the present invention.

Fig. 3 is a schematic structural view of a hydraulic supply device in a fastening mechanism for a tower bolt of a wind turbine generator.

Wherein: the moving device 21, the vertical moving assembly 211, the vertical moving rail 2111, the vertical moving slide 2112, the horizontal moving assembly 212, the horizontal moving rail 2121, the horizontal moving slide 2122, the driving wrench 22, the driver 221, the driving shaft 222, the sleeve 23, the coaxial recognition device 24, the alignment resetting device 25, the alignment assisting device 26, the third in-place detector 261, the bearing housing 27, the hydraulic pressure supplying device 28, the hydraulic pump 281, the hydraulic oil tank 282, the overflow valve 283, the pressure detector 284, the electric control box 285, and the universal wheel 286.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

The technical scheme provides a fastening mechanism for a tower bolt of a wind turbine generator, which comprises a moving device 21, a driving spanner 22, a sleeve 23 and a coaxial recognition device 24; the driving wrench 22 is rotatably mounted at the moving end of the moving device 21, the sleeve 23 is sleeved at the driving end of the driving wrench 22, the moving device 21 is used for adjusting the position of the driving wrench 22, the sleeve 23 is used for sleeving a bolt, and the driving wrench 22 is used for applying torque to the sleeve 23 sleeved with the bolt and screwing the bolt;

The coaxial recognition device 24 is installed inside the driving wrench 22, and the working end of the coaxial recognition device 24 is located at the bottom of the driving end of the driving wrench 22; the coaxial recognition means 24 are electrically coupled to the moving means 21, the coaxial recognition means 24 being adapted to drive the moving means 21 and to make the sleeve 23 and the bolt coaxial.

In order to effectively solve the problems that the existing bolt detection and fastening device is difficult to align the bolt and cannot screw the bolt to the target torque, the technical scheme provides a fastening mechanism for a tower barrel bolt of a wind turbine generator, as shown in fig. 1-3, which comprises a moving device 21, a driving spanner 22 and a sleeve 23; the driving spanner 22 is rotatably arranged at the moving end of the moving device 21, and the sleeve 23 is sleeved at the driving end of the driving spanner 22; when the fastening mechanism is positioned in front of the bolt to be fastened, the moving device 21 adjusts the position of the driving spanner 22, and the sleeve 23 can accurately sleeve the bolt, after the bolt is sleeved, the driving spanner 22 applies torque to the sleeve 23 sleeved with the bolt and tightens the bolt, so that the fastening of the bolt is realized. Because the existing bolt detection and fastening device generally integrates the walking and fastening functions, and the structural movement of the device is mainly used for realizing the walking of the device, consideration of realizing accurate sleeving of the bolt is omitted, the existing bolt detection and fastening device is difficult to align the bolt, and therefore the bolt cannot be screwed to the target torque. Therefore, in order to prevent the occurrence of the above situation, the moving position 21 is specially set in the fastening mechanism for the fan electric tower, the sleeve 23 can be moved to the position right above the bolt through the moving device 21, then the bolt is sleeved downwards, accurate sleeving of the bolt is achieved, the driving spanner 22 applies torque to the sleeve 23 sleeved with the bolt and screws the bolt, and therefore effective fastening of the bolt is achieved.

In order to achieve an automatic, quick alignment of the sleeve 23 and the bolt by the displacement device 21, the solution also provides, in particular, a coaxial recognition device 24 for recognizing whether the sleeve 23 and the bolt are coaxial or not in the fastening mechanism. Specifically, the coaxial recognition device 24 is electrically coupled to the moving device 21, the moving device 21 is used for moving the sleeve 23, when the coaxial recognition device 24 detects that the sleeve 23 and the bolt are coaxial, the moving device 21 stops the alignment movement of the sleeve 23 in the horizontal direction after receiving the coaxial signal of the coaxial recognition device 24, and then moves the sleeve 23 downwards and causes the sleeve 23 to be sleeved into the bolt.

It should be noted that, the coaxial recognition device 24 in this solution may be an image capturing device or a video capturing device, and recognizes an implementation picture or a real-time video captured by the entrance of the accommodating cavity of the sleeve 23 through the working end thereof, and determines whether the sleeve 23 is coaxial with the bolt, thereby implementing accurate alignment of the sleeve 23 and the bolt. The coaxial recognition device 24 and the related recognition judging method in this embodiment can be obtained by the existing detection device and analysis algorithm, and are not limited and described in detail herein.

Preferably, the fastening mechanism further includes a bearing block 27, the bearing block 27 is mounted on the top of the driving wrench 22, and the driving wrench 22 is rotatably mounted on the moving end of the moving device 21 through the bearing block 27.

In a preferred embodiment of the present disclosure, the fastening mechanism further includes a bearing seat 27, the bearing seat 27 is mounted on the top of the driving wrench 22, and the driving wrench 22 is rotatably mounted on the moving end of the moving device 21 through the bearing seat 27, which has a simple structure and reliable performance, and is beneficial to ensuring smooth rotation of the driving wrench 22 relative to the moving device 21.

Further, the driving wrench 22 includes a driver 221 and a driving shaft 222, the driving shaft 222 is rotatably mounted at the moving end of the moving device 21, the driver 221 is sleeved outside the driving shaft 222, and the driver 221 is used for driving the driving shaft 222 to rotate;

The coaxial recognition device 24 is mounted inside the driving shaft 222, and the working end of the coaxial recognition device 24 is located at the bottom of the driving shaft 222.

In one embodiment of the present disclosure, the driving wrench 22 includes a driver 221 for driving the rotation of the driving shaft 222 and the driving shaft 222, where the driving shaft 222 is rotatably mounted on the moving end of the moving device 21, and the driver 221 is sleeved on the outside of the driving shaft 222, so as to facilitate the effective transmission of torque. The coaxial recognition device 24 is installed in the driving shaft 222, and the working end of the coaxial recognition device 24 is located at the bottom of the driving shaft 222, so that the structure is compact, the automation degree and the alignment accuracy of the fastening mechanism are improved on the premise of not increasing the structural design, and the structural simplification and the light weight design of the fastening mechanism are facilitated.

Further, the moving device 21 includes a vertical moving assembly 211 and a horizontal moving assembly 212, the horizontal moving assembly 212 is vertically movably mounted to the vertical moving assembly 211, and the driving wrench 22 is horizontally movably mounted to the horizontal moving assembly 212.

In one embodiment of the present disclosure, the moving device 21 includes a vertical moving assembly 211 and a horizontal moving assembly 212, the horizontal moving assembly 212 is movably mounted on the vertical moving assembly 211, the driving wrench 22 is movably mounted on the horizontal moving assembly 212, so that the sleeve 23 mounted on the bottom of the driving wrench 22 can move in the horizontal direction through the horizontal moving assembly 212 and move in the vertical direction through the vertical moving assembly 211, thereby facilitating the sleeve 23 to accurately sleeve the bolt under the driving of the moving device 21.

Preferably, the vertical movement assembly 211 includes a vertical movement rail 2111 and a vertical movement slider 2112, one end of the vertical movement slider 2112 is slidably connected to either side of the vertical movement rail 2111, and the vertical movement slider 2112 slides up and down along the extending direction of the vertical movement rail 2111;

the horizontal moving assembly 212 includes a horizontal moving rail 2121 and a horizontal moving slider 2122, and an inner end of the horizontal moving rail 2121 faces the bolt; the other end of the vertical moving slide block 2112 is fixedly connected with the outer end of the horizontal moving rail 2121, one end of the horizontal moving slide block 2122 is slidably connected to the bottom of the horizontal moving rail 2121, the horizontal moving slide block 2122 horizontally slides along the extending direction of the horizontal moving rail 2121, and the other end of the horizontal moving slide block 2122 is fixedly connected with the top of the driving wrench 22.

In a preferred embodiment of the present disclosure, the vertical moving component 211 and the horizontal moving component 212 have the same structural composition, which facilitates the assembly of the moving device 21 and reduces the production cost of the fastening mechanism. Specifically, since the existing bolt detection and fastening device generally moves the fastening device for fastening the bolt to the vicinity of the bolt to be fastened by arranging the travelling mechanism, the scheme can align with the bolt to be fastened only by moving the moving device 21 in two directions (i.e., the inner and outer directions and the up and down directions), the moving line is clear and simple, and the sleeve 23 can be positioned quickly.

To further illustrate, the sleeve 23 is detachably sleeved on the driving end of the driving wrench 22, and the shape of the accommodating cavity of the sleeve 23 is matched with the shape of the bolt;

The fastening mechanism further comprises an alignment reset device 25, the alignment reset device 25 is installed between the moving device 21 and the driving wrench 22, the driving wrench 22 is rotatably installed at the bottom of the alignment reset device 25, and the alignment reset device 25 is used for driving the driving wrench 22 to rotate.

In order to improve the applicability of the sleeve 23, the existing bolt fastening device generally sets a limiting plate used for adapting to different bolt sizes in the sleeve 23, and the bolts with different sizes are clamped by adjusting the extending length of the limiting plate in the sleeve 23, so that the bolts are fastened conveniently after being clamped. The prior art sleeve 23 generally requires a clamping device including a limiting plate and a clamping bolt for driving the limiting plate, which results in a very complex and heavy structure of the fastening device.

Therefore, in order to solve the technical problems of complex and heavy structure of the existing fastening device on the premise of realizing bolt clamping, the sleeve 23 of the scheme is detachably sleeved on the driving end of the driving wrench 22, and the shape of the accommodating cavity of the sleeve 23 is matched with the shape of the bolt, so that the universality of the sleeve 23 is realized; because the size of each layer of bolts in the fan electric tower barrel is consistent, when the fastening mechanism finishes the operation on one layer of bolts, the sleeve 23 with different accommodating cavity sizes can be replaced to continuously operate on the next layer of bolts, and the structure of the fastening mechanism is simplified on the premise of convenient use and quick replacement.

Further, since the receiving cavity of the sleeve 23 of the present embodiment has a specific shape, the sleeve 23 can be tightly fitted to the bolt only when the receiving cavity of the sleeve 23 has to be perfectly matched to the shape of the bolt (i.e., the corner of the receiving cavity corresponds to the corner of the bolt and the side of the receiving cavity corresponds to the side of the bolt). For this reason, the present solution further adds an alignment reset device 25 on the fastening mechanism, where the alignment reset device 25 is installed between the moving device 21 and the driving wrench 22, and when the sleeve 23 moves right above the bolt through the moving device 21, the sleeve 23 rotates to the shape of the accommodating cavity of the sleeve 23 through the alignment reset device 25 to correspond to the shape of the bolt to be fastened, so as to ensure that the bolt can be completely sleeved by the sleeve 23.

Furthermore, since the driver 221 of the driving wrench 22 has a certain size, in order to avoid the torque position (i.e. the position where the driver 221 is located after the bolt is screwed) of the last output of the driver 221 interfering with the normal movement of the running mechanism, when the bolt is screwed, the sleeve 23 moves upwards through the moving device 21 to separate from the bolt, the driver 221 can be reset by the positioning reset device 25, and rotated to a proper angle, so that the normal movement of the running mechanism is not affected.

As a preferred embodiment of the present invention, a mounting plate (not shown) is detachably mounted on the bottom of the driving shaft 222, and the sleeve 23 is detachably connected to the driving shaft 222 through the mounting plate. When the sleeve 23 needs to be replaced, the sleeve 23 can be replaced by disassembling the mounting baffle.

It should be noted that, in one embodiment of the present disclosure, the alignment reset device 25 may be a motor.

To further illustrate, the sleeve 23 is movably sleeved on the lower portion of the driving shaft 222, the fastening mechanism further includes a positioning auxiliary device 26, the positioning auxiliary device 26 is sleeved on the outside of the driving shaft 222, and the positioning auxiliary device 26 is located between the driver 221 and the sleeve 23.

If the shape of the receiving cavity of the sleeve 23 does not completely correspond to the shape of the bolt to be fastened, the sleeve 23 may be damaged by the bolt and the fastening mechanism when driven by the moving device 21, and thus, in order to avoid the above situation, a registration auxiliary device 26 for adjusting the sleeve 23 to move up and down relative to the driving shaft 222 is additionally provided in the fastening mechanism.

Specifically, the sleeve 23 is sleeved on the lower part of the driving shaft 222 in a vertically movable manner, and the downward movement of the sleeve 23 relative to the driving shaft 222 is realized by the alignment auxiliary device 26. When the sleeve 23 moves right above the bolt under the driving of the moving device 21 and corresponds to the bolt under the rotation of the alignment reset device 25, the sleeve 23 moves downward relative to the driving shaft 222 and sleeves the bolt under the action of gravity through the alignment auxiliary device 26, and after the bolt is sleeved by the sleeve 23, the shape of the accommodating cavity of the sleeve 23 can be completely corresponding to the shape of the bolt to be fastened, at this time, the sleeve 23 completely sleeves the bolt under the driving of the moving device 21 (i.e. at this time, the sleeve 23 moves upward relative to the driving shaft 222 under the driving of the moving device 21), so as to avoid the damage of the bolt and the fastening mechanism, thereby effectively prolonging the service life of the bolt and the fastening mechanism.

Further illustratively, the alignment aid 26 is a resilient member and the fastening mechanism further includes a third in-place detector 261; the elastic member is sleeved outside the driving shaft 222, one end of the elastic member is connected with the driver 221, and the other end of the elastic member is connected with the sleeve 23; the third in-place detector 261 is located inside the elastic member and is disposed close to the driver 221, and the third in-place detector 261 is electrically coupled to the vertical movement assembly 211.

Specifically, in one embodiment of the present disclosure, when the sleeve 23 moves horizontally to a position right above the bolt to be fastened under the driving of the horizontal moving component 212, the sleeve 23 moves downward under the driving of the vertical moving component 211, and when the sleeve 23 overcomes the elastic force of the elastic component and moves upward relative to the driving shaft 222, and the top abuts against the third in-place detector 261 (when the bottom of the sleeve 23 abuts against the upper end surface of the bolt), the vertical moving component 211 receives the in-place signal of the third in-place detector 261 and stops moving downward; then, the sleeve 23 is driven by the alignment reset device 25 to rotate, when the shape of the accommodating cavity of the sleeve 23 corresponds to the shape of the bolt to be fastened, the sleeve 23 moves downwards relative to the driving shaft 222 under the action of gravity and is sleeved on the bolt, the third in-place detector 261 triggers and enables the vertical moving assembly 211 to descend again, when the top of the sleeve 23 is propped against the third in-place detector 261 again, the vertical moving assembly 211 receives an in-place signal of the third in-place detector 261 and stops moving downwards, and at the moment, the sleeve 23 is completely sleeved on the bolt.

It should be noted that the elastic member in this embodiment may be a spring, and more preferably may be a compression spring. The third in-place detector 261 of the present solution may be a micro switch. When the elastic member is a compression spring, the sleeve 23 can move downwards relative to the driving shaft 222 and sleeve the bolt under the action of gravity and the elasticity of the compression spring through the elastic member, which is more beneficial to the effective sleeving of the sleeve 23 on the bolt.

Still further, the registration assistance device 26 is an electromagnet, and the fastening mechanism further includes a fourth in-place detector; the electromagnet is sleeved outside the driving shaft 222, and is used for magnetically attracting the sleeve 23 when the electromagnet is electrified; the fourth in-place detector is mounted to the lower end surface of the sleeve 23, and the fourth in-place detector is electrically coupled to the vertical movement assembly 211.

Specifically, in another embodiment of the present disclosure, after the electromagnet (not shown in the drawing) is energized, when the sleeve 23 is driven by the horizontal moving component 212 to move horizontally to a position right above the bolt to be fastened, the sleeve 23 is driven by the vertical moving component 211 to move downward, and when the top of the sleeve 23 abuts against the fourth in-place detector (at this time, the lower end face of the sleeve 23 abuts against the upper end face of the bolt), the vertical moving component 211 receives an in-place signal of the fourth in-place detector (not shown in the drawing) and stops moving downward; then, the sleeve 23 is driven by the alignment reset device 25 to rotate, when the shape of the accommodating cavity of the sleeve 23 corresponds to the shape of the bolt to be fastened, the electromagnet is powered off, the sleeve 23 moves downwards relative to the driving shaft 222 under the action of gravity and sleeves the bolt, the fourth in-place detector triggers and enables the vertical moving assembly 211 to descend again, when the upper end face of the sleeve 23 abuts against the upper surface of the fastening platform 31, the vertical moving assembly 211 receives an in-place signal of the fourth in-place detector and stops moving downwards, and at the moment, the sleeve 23 completely sleeves the bolt.

It should be noted that the fourth in-place detector in this embodiment may be a micro switch.

Further illustratively, the driver 221 is either an electric wrench driver or a hydraulic wrench driver.

The driving spanner 22 in the scheme can provide torque output power by an electric spanner driver or a hydraulic spanner driver, so that the bolt can be conveniently and completely screwed under the driving of the driving spanner 22.

Further, the driver 221 is a hydraulic wrench driver, and the fastening mechanism further includes a hydraulic supply device 28, where the hydraulic supply device 28 and the driver 221 are connected by a hydraulic oil pipe, and the hydraulic supply device 28 is used for providing operation power to the driver 221.

In a preferred embodiment of the present invention, when the driver 221 is a hydraulic wrench driver, the fastening mechanism further includes a hydraulic supply device 28 for providing working power to the driver 221, and the hydraulic supply device 28 and the driver 221 are connected through a hydraulic oil pipe (not shown in the figure) to ensure that the function of the driving wrench 22 is normally implemented.

To further explain, the hydraulic supply device 28 includes a hydraulic pump 281 and a hydraulic oil tank 282, the driver 221, the hydraulic pump 281 and the hydraulic oil tank 282 are connected to each other through hydraulic oil pipes, and the inside of the driver 221, the hydraulic pump 281 and the hydraulic oil tank 282 are communicated with each other, and the hydraulic pump 281 is used for generating pressure to convey hydraulic oil of the hydraulic oil tank 282 to the driver 221;

The hydraulic pressure supply device 28 further includes a reversing valve, a relief valve 283, a pressure detector 284, an electrical control box 285, and a universal wheel 286, the reversing valve, the relief valve 283, and the pressure detector 284 are installed between the driver 221 and the hydraulic pump 281, and the reversing valve is used for switching the flow direction of hydraulic oil, the relief valve 283 is used for adjusting the output pressure of the hydraulic pump 281, and the pressure detector 284 is used for detecting the oil pressure of the hydraulic oil;

The electrical control box 285 is electrically coupled to any one or a combination of the mobile device 21, the driver 221 and the coaxial recognition device 24, and the universal wheel 286 is mounted to the bottom of the hydraulic oil tank 282.

Specifically, the hydraulic pressure supply device 28 includes a hydraulic pump 281 and a hydraulic oil tank 282, the driver 221, the hydraulic pump 281, and the hydraulic oil tank 282 are connected to each other through a hydraulic oil pipe (not shown in the drawings), and the interiors of the driver 221, the hydraulic pump 281, and the hydraulic oil tank 282 are communicated with each other; when the driving wrench 22 is started, the hydraulic pump 281 generates pressure to convey the hydraulic oil of the hydraulic oil tank 282 to the driver 221, and the driver 221 applies torque to the driving shaft 222, thereby completing the tightening of the bolt.

Further, the hydraulic pressure supply device 28 further includes a directional valve (not shown), a relief valve 283, and a pressure detector 284, and the directional valve, the relief valve 283, and the pressure detector 284 are installed between the driver 221 and the hydraulic pump 281. The reversing valve is used for switching the flow direction of hydraulic oil, and when the fastening mechanism does not need hydraulic oil, the reversing valve switches the flow direction of the hydraulic oil, so that the hydraulic oil can flow back to the hydraulic oil tank 282; the pressure detector 284 is used for detecting the oil pressure of the hydraulic oil, the relief valve 283 is used for adjusting the output pressure of the hydraulic pump 281, and a technician can adjust the output pressure of the hydraulic pump 281 according to actual needs, so as to facilitate the improvement of the controllability of the fastening mechanism.

Still further, the hydraulic pressure supply device 28 in this embodiment may further include an electrical control box 285, where the electrical control box 285 is electrically connected to any one or more of the moving device 21, the driver 221 and the coaxial recognition device 24, respectively, so that a technician can adjust related parameters of the fastening mechanism through the electrical control box 285, which is beneficial to further improving controllability of the fastening mechanism. In a preferred embodiment of the present disclosure, the hydraulic supply device 28 further includes a universal wheel 286 mounted on the bottom of the hydraulic tank 282 to facilitate movement of the hydraulic supply device 28.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (9)

1. A fastening mechanism for wind turbine tower section of thick bamboo bolt, its characterized in that: comprises a moving device, a driving spanner, a sleeve and a coaxial identification device; the driving wrench is rotatably arranged at the moving end of the moving device, the sleeve is sleeved at the driving end of the driving wrench, the moving device is used for adjusting the position of the driving wrench, the sleeve is used for sleeving a bolt, and the driving wrench is used for applying torque to the sleeve sleeved with the bolt and screwing the bolt;

The coaxial identification device is arranged in the driving spanner, and the working end of the coaxial identification device is positioned at the bottom of the driving end of the driving spanner; the coaxial recognition device is electrically coupled to the moving device and is used for driving the moving device and enabling the sleeve and the bolt to be coaxial;

The driving wrench comprises a driver and a driving shaft, the sleeve is sleeved on the lower portion of the driving shaft in a vertically movable mode, the fastening mechanism further comprises a registration auxiliary device, the registration auxiliary device is sleeved on the outer portion of the driving shaft, the registration auxiliary device is located between the driver and the sleeve, and the registration auxiliary device is used for adjusting the sleeve to move up and down relative to the driving shaft.

2. The fastening mechanism for a tower bolt of a wind turbine generator according to claim 1, wherein: the driving shaft is rotatably arranged at the moving end of the moving device, the driver is sleeved outside the driving shaft, and the driver is used for driving the driving shaft to rotate;

the coaxial recognition device is arranged in the driving shaft, and the working end of the coaxial recognition device is positioned at the bottom of the driving shaft.

3. The fastening mechanism for a tower bolt of a wind turbine generator according to claim 2, wherein: the moving device comprises a vertical moving assembly and a horizontal moving assembly, wherein the horizontal moving assembly is installed on the vertical moving assembly in a vertically movable manner, and the driving wrench is installed on the horizontal moving assembly in a horizontally movable manner.

4. A fastening mechanism for a tower bolt of a wind turbine according to claim 3, wherein: the sleeve is detachably sleeved at the driving end of the driving wrench, and the shape of the accommodating cavity of the sleeve is matched with the shape of the bolt;

The fastening mechanism further comprises an alignment resetting device, the alignment resetting device is arranged between the moving device and the driving wrench, the driving wrench is rotatably arranged at the bottom of the alignment resetting device, and the alignment resetting device is used for driving the driving wrench to rotate.

5. A fastening mechanism for a tower bolt of a wind turbine according to claim 3, wherein: the alignment auxiliary device is an elastic piece, and the fastening mechanism further comprises a third in-place detector; the elastic piece is sleeved outside the driving shaft, one end of the elastic piece is connected with the driver, and the other end of the elastic piece is connected with the sleeve; the third in-place detector is located inside the elastic member and is disposed proximate to the driver, and the third in-place detector is electrically coupled to the vertical movement assembly.

6. A fastening mechanism for a tower bolt of a wind turbine according to claim 3, wherein: the alignment auxiliary device is an electromagnet, and the fastening mechanism further comprises a fourth in-place detector; the electromagnet is sleeved outside the driving shaft and is used for magnetically attracting the sleeve when being electrified; the fourth in-place detector is mounted to the lower end face of the sleeve, and the fourth in-place detector is electrically coupled to the vertical movement assembly.

7. The fastening mechanism for a tower bolt of a wind turbine generator according to claim 1, wherein: the driver is any one of an electric spanner driver and a hydraulic spanner driver.

8. The fastening mechanism for a tower bolt of a wind turbine generator according to claim 7, wherein: the driver is a hydraulic wrench driver, the fastening mechanism further comprises a hydraulic supply device, the hydraulic supply device is connected with the driver through a hydraulic oil pipe, and the hydraulic supply device is used for providing operation power for the driver.

9. The fastening mechanism for a tower bolt of a wind turbine generator according to claim 8, wherein: the hydraulic supply device comprises a hydraulic pump and a hydraulic oil tank, wherein the driver, the hydraulic pump and the hydraulic oil tank are mutually connected through a hydraulic oil pipe, the driver, the hydraulic pump and the hydraulic oil tank are mutually communicated, and the hydraulic pump is used for generating pressure to convey hydraulic oil of the hydraulic oil tank to the driver;

the hydraulic supply device further comprises a reversing valve, an overflow valve, a pressure detector, an electric control box and a universal wheel, wherein the reversing valve, the overflow valve and the pressure detector are arranged between the driver and the hydraulic pump, the reversing valve is used for switching the flow direction of hydraulic oil, the overflow valve is used for adjusting the output pressure of the hydraulic pump, and the pressure detector is used for detecting the oil pressure of the hydraulic oil;

The electric control box is electrically coupled to any one or a combination of a plurality of the moving device, the driver and the coaxial recognition device, and the universal wheel is installed at the bottom of the hydraulic oil tank.